package com.example.demo.AliOSS;

import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.model.GeneratePresignedUrlRequest;
import java.net.URL;
import java.util.Date;

public class PreviewFileDemo {
    public static void main(String[] args) throws Throwable {
        // Endpoint以华东1（杭州）为例，其它Region请按实际情况填写。
        String endpoint = "oss-cn-shanghai.aliyuncs.com";
        // 阿里云账号AccessKey拥有所有API的访问权限，风险很高。强烈建议您创建并使用RAM用户进行API访问或日常运维，请登录RAM控制台创建RAM用户。
        String accessKeyId = "LTAI5tJErzN5gLorV8ujASmp";
        String accessKeySecret = "FTFfyHilnihDW9tDsLEIVovAUtdB5M";
        String bucketName = "ceshiwenjianshangchuan";
        // 填写Object完整路径，完整路径中不能包含Bucket名称。
        String objectName = "ceshi/大文件.sql";

        // 创建OSSClient实例。
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

        try {
            // 设置样式，样式中包含文档预览参数。
            String style = "imm/previewdoc,copy_1";
            // 指定签名URL过期时间为10分钟。
            Date expiration = new Date(System.currentTimeMillis() + 1000 * 60 * 10);
            GeneratePresignedUrlRequest req = new GeneratePresignedUrlRequest(bucketName, objectName, HttpMethod.GET);
            req.setExpiration(expiration);
            req.setProcess(style);
            System.out.println(ossClient.generatePresignedUrl(req));
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            System.out.println("Error Message:" + oe.getErrorMessage());
            System.out.println("Error Code:" + oe.getErrorCode());
            System.out.println("Request ID:" + oe.getRequestId());
            System.out.println("Host ID:" + oe.getHostId());
        } catch (ClientException ce) {
            System.out.println("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}
